It depends what kind of user you are, as there are obviously many people on here who will say it's not worth it becasue OLED, 120hz etc. etc.
But my honest review, as someone who is a perfect target for this sort of TV (i.e. I love the convenience of it but don't care about it being the absolute pinacle of technology) is that it's a worthwhile upgrade: Nothing has been massively improved, but everything has been improved just enough to make the overall experience a really good one – it almost sort of feels like Gen 1 was the beta test and Gen 2 is the solid version they would have wanted Glass to have been all along.
Plus, it has fixed my 3 major issues with Gen 1: 1) The screen looks good off-angle, I often sit to the side of the TV and couldn't see it well with the Gen 1; 2) the sound is way better, much closer to soundbar quality; 3) Sky haven't commented on the internal hardware but everything feels snappier scrolling through the OS, I haven't had to restart my TV yet.
In a nutshell – If you liked Gen 1, you'll love Gen 2 and might consider it worth your money upgrading. If you didn't like Gen 1, there's nothing new about Gen 2 that would change that and you'd probably want to look for a higher-spec TV anyway.
